private Endpoint createEndpoint(
Resource resource, String relativePath, EntityTag entityTag, Date lastModified)
throws EndpointCreationException {
String candidatePath = relativePath;
int repetitions = 0;
while (repetitions < MAX_ENDPOINT_CREATION_FAILURE) {
try {
String resourcePath = calculateResourcePath(resource, candidatePath);
Endpoint newEndpoint =
this.factoryService.createEndpoint(resource, resourcePath, entityTag, lastModified);
this.endpointRepository.add(newEndpoint);
return newEndpoint;
} catch (EndpointNotFoundException e) {
throw new EndpointCreationException(
"Could not calculate path for resource '" + resource.id() + "'", e);
} catch (IllegalArgumentException e) {
// TODO: Define a proper exception
if (candidatePath != null) {
repetitions++;
}
candidatePath = null;
}
}
throw new EndpointCreationException(
"Could not create endpoint for resource '" + resource.id() + "'");
}
public Endpoint deleteResourceEndpoint(Resource resource) throws EndpointNotFoundException {
checkNotNull(resource, "ResourceSnapshot cannot be null");
Endpoint endpoint = this.endpointRepository.endpointOfResource(resource.id());
if (endpoint == null) {
throw new EndpointNotFoundException(resource.id());
}
this.endpointRepository.remove(endpoint);
this.listenerManager.notify(new EndpointDeletionNotification(endpoint));
return endpoint;
}
public Endpoint modifyResourceEndpoint(Resource resource, EntityTag entityTag, Date lastModified)
throws EndpointNotFoundException {
checkNotNull(resource, "ResourceSnapshot cannot be null");
checkNotNull(entityTag, "Entity tag cannot be null");
checkNotNull(lastModified, "Last modified cannot be null");
Endpoint endpoint = endpointRepository.endpointOfResource(resource.id());
if (endpoint == null) {
throw new EndpointNotFoundException(resource.id());
}
endpoint.modify(entityTag, lastModified);
return endpoint;
}
private String generatePathForAttachment(Resource child, Resource parent)
throws EndpointNotFoundException {
Attachment attachment = parent.findAttachment(child.id());
if (attachment == null) {
return null;
}
Endpoint endpoint = getResourceEndpoint(parent.id());
ResourceTemplate parentTemplate =
this.templateManagementService.findTemplateById(parent.id().templateId());
AttachedTemplate attachedTemplate = parentTemplate.attachedTemplate(attachment.id());
StringBuilder builder = new StringBuilder();
addSegment(builder, endpoint.path());
addSegment(builder, attachedTemplate.path());
return builder.toString();
}
private String calculateResourcePath(Resource resource, String desiredPath)
throws EndpointNotFoundException {
if (resource.isRoot()) {
throw new IllegalStateException("Cannot get path for root resource");
}
Resource parent = this.resourceRepository.find(resource.parentId(), Resource.class);
if (parent == null) {
throw new IllegalStateException(
"Could not load resource '" + resource.parentId() + "' from the repository");
}
String result =
parent instanceof Container
? generatePathForMember(resource, (Container) parent, desiredPath)
: null;
if (result == null) {
result = generatePathForAttachment(resource, parent);
if (result == null) {
throw new IllegalStateException(
"Could not determine path for resource '"
+ resource.id()
+ "' with parent '"
+ parent.id()
+ "'");
}
}
return result;
}
private String generatePathForMember(Resource child, Container parent, String desiredPath)
throws EndpointNotFoundException {
if (parent.hasMember(child.id())) {
Endpoint endpoint = getResourceEndpoint(parent.id());
ContainerTemplate parentTemplate =
templateManagementService.findTemplateById(
parent.id().templateId(), ContainerTemplate.class);
if (parentTemplate == null) {
throw new IllegalStateException("Could not find template resource '" + parent + "'");
}
StringBuilder builder = new StringBuilder();
addSegment(builder, endpoint.path());
addSegment(builder, parentTemplate.memberPath().or(""));
addSegment(builder, IdGenerator.nextMemberId(parent));
addSegment(builder, desiredPath);
// Object lastSegment = desiredPath;
// if(lastSegment==null) {
// lastSegment=IdGenerator.nextMemberId(parent);
// }
// addSegment(builder,lastSegment);
return builder.toString();
}
return null;
}